A Galveston County jury sentenced a Bacliff woman to 15 years in prison Friday for videotaping the sexual assault of a 16-month-old baby by the infant's grandfather last February.

The jury in state District Judge Susan Criss' courtroom deliberated 20 minutes early Friday to find Alisha Marie Drake, 24, guilty of producing a performance, to-wit: the videotape that included the sexual assault of the baby girl, said Adam Poole, chief of child abuse at the Galveston County District Attorney's Office.

The jury took another 30 minutes Friday afternoon to decide on the punishment.

Jurors were "visibly affected and disturbed" by watching the videotape of the assault, Poole said. Drake's voice could be heard on the videotape recovered by Galveston County sheriff's detectives, and further investigation matched the voice to her.

The grandfather, 34-year-old Jason Grant, is scheduled to go on trial in October for felony sexual assault of a child. If found guilty, he faces 24 to 99 years or life in prison with no parole, Poole said.